selinux-policy/refpolicy/policy/modules/services/spamassassin.if

## <summary>Filter used for removing unsolicited email.</summary>

#######################################
## <summary>
##	The per user domain template for the spamassassin module.
## </summary>
## <desc>
##	<p>
##	The per user domain template for the spamassassin module.
##	</p>
##	<p>
##	This template is invoked automatically for each user, and
##	generally does not need to be invoked directly
##	by policy writers.
##	</p>
## </desc>
## <param name="userdomain_prefix">
##	The prefix of the user domain (e.g., user
##	is the prefix for user_t).
## </param>
## <param name="user_domain">
##	The type of the user domain.
## </param>
## <param name="user_role">
##	The role associated with the user domain.
## </param>
#
# cjp: when tunables are available, spamc stuff should be
# toggled on activation of spamc, and similarly for spamd.
template(`spamassassin_per_userdomain_template',`
	gen_require(`
		type spamd_t, spamd_tmp_t;
		type spamc_exec_t, spamassassin_exec_t;
	')

	type $1_spamc_t;
	domain_type($1_spamc_t)
	domain_entry_file($1_spamc_t,spamc_exec_t)
	role $3 types $1_spamc_t;

	type $1_spamc_tmp_t;
	files_tmp_file($1_spamc_tmp_t)

	type $1_spamassassin_t;
	domain_type($1_spamassassin_t)
	domain_entry_file($1_spamassassin_t,spamassassin_exec_t)
	role $3 types $1_spamassassin_t;

	type $1_spamassassin_home_t alias $1_spamassassin_rw_t;
	userdom_home_file($1,$1_spamassassin_home_t)
	files_poly_member($1_spamassassin_home_t)

	type $1_spamassassin_tmp_t;
	files_tmp_file($1_spamassassin_tmp_t)

	##############################
	#
	# $1_spamc_t local policy
	#

	allow $1_spamc_t self:process ~{ ptrace setcurrent setexec setfscreate setrlimit execmem execstack execheap };
	allow $1_spamc_t self:fd use;
	allow $1_spamc_t self:fifo_file rw_file_perms;
	allow $1_spamc_t self:sock_file r_file_perms;
	allow $1_spamc_t self:shm create_shm_perms;
	allow $1_spamc_t self:sem create_sem_perms;
	allow $1_spamc_t self:msgq create_msgq_perms;
	allow $1_spamc_t self:msg { send receive };
	allow $1_spamc_t self:unix_dgram_socket create_socket_perms;
	allow $1_spamc_t self:unix_stream_socket create_stream_socket_perms;
	allow $1_spamc_t self:unix_dgram_socket sendto;
	allow $1_spamc_t self:unix_stream_socket connectto;
	allow $1_spamc_t self:tcp_socket create_stream_socket_perms;
	allow $1_spamc_t self:udp_socket create_socket_perms;

	allow $1_spamc_t $1_spamc_tmp_t:dir create_dir_perms;
	allow $1_spamc_t $1_spamc_tmp_t:file create_file_perms;
	files_create_tmp_files($1_spamc_t, $1_spamc_tmp_t, { file dir })

	# Allow connecting to a local spamd
	allow $1_spamc_t spamd_t:tcp_socket { connectto recvfrom };
	allow spamd_t $1_spamc_t:tcp_socket { acceptfrom recvfrom };
	allow $1_spamc_t spamd_t:unix_stream_socket connectto;
	allow $1_spamc_t spamd_tmp_t:sock_file rw_file_perms;

	domain_auto_trans($2, spamc_exec_t, $1_spamc_t)
	allow $2 $1_spamc_t:fd use;
	allow $1_spamc_t $2:fd use;
	allow $1_spamc_t $2:fifo_file rw_file_perms;
	allow $1_spamc_t $2:process sigchld;

	kernel_read_kernel_sysctl($1_spamc_t)
	kernel_tcp_recvfrom($1_spamc_t)

	corenet_tcp_sendrecv_generic_if($1_spamc_t)
	corenet_udp_sendrecv_generic_if($1_spamc_t)
	corenet_raw_sendrecv_generic_if($1_spamc_t)
	corenet_tcp_sendrecv_all_nodes($1_spamc_t)
	corenet_udp_sendrecv_all_nodes($1_spamc_t)
	corenet_raw_sendrecv_all_nodes($1_spamc_t)
	corenet_tcp_sendrecv_all_ports($1_spamc_t)
	corenet_udp_sendrecv_all_ports($1_spamc_t)
	corenet_tcp_bind_all_nodes($1_spamc_t)
	corenet_udp_bind_all_nodes($1_spamc_t)
	corenet_tcp_connect_all_ports($1_spamc_t)

	fs_search_auto_mountpoints($1_spamc_t)

	# cjp: these should probably be removed:
	corecmd_list_bin($1_spamc_t)
	corecmd_read_bin_symlink($1_spamc_t)
	corecmd_read_bin_file($1_spamc_t)
	corecmd_read_bin_pipe($1_spamc_t)
	corecmd_read_bin_socket($1_spamc_t)
	corecmd_list_sbin($1_spamc_t)
	corecmd_read_sbin_symlink($1_spamc_t)
	corecmd_read_sbin_file($1_spamc_t)
	corecmd_read_sbin_pipe($1_spamc_t)
	corecmd_read_sbin_socket($1_spamc_t)

	domain_use_wide_inherit_fd($1_spamc_t)

	files_read_etc_files($1_spamc_t)
	files_read_etc_runtime_files($1_spamc_t)
	files_read_usr_files($1_spamc_t)
	files_dontaudit_search_var($1_spamc_t)
	# cjp: this may be removable:
	files_list_home($1_spamc_t)

	libs_use_ld_so($1_spamc_t)
	libs_use_shared_libs($1_spamc_t)

	logging_send_syslog_msg($1_spamc_t)

	miscfiles_read_localization($1_spamc_t)

	# cjp: this should probably be removed:
	seutil_read_config($1_spamc_t)

	sysnet_read_config($1_spamc_t)

	userdom_use_unpriv_users_fd($1_spamc_t)
	# cjp: this really should just be the
	# terminal specific to the role
	userdom_use_unpriv_user_pty($1_spamc_t)

	# cjp: this should probably be removed:
	tunable_policy(`read_default_t',`
		files_list_default($1_spamc_t)
		files_read_default_files($1_spamc_t)
		files_read_default_symlinks($1_spamc_t)
		files_read_default_sockets($1_spamc_t)
		files_read_default_pipes($1_spamc_t)
	')

	optional_policy(`mount',`
		mount_send_nfs_client_request($1_spamc_t)
	')

	optional_policy(`nis',`
		nis_use_ypbind($1_spamc_t)
	')

	optional_policy(`nscd',`
		nscd_use_socket($1_spamc_t)
	')

	optional_policy(`sendmail',`
		mta_read_config($1_spamc_t)
		sendmail_stub($1_spamc_t)
	')

	##############################
	#
	# $1_spamassassin_t local policy
	#

	allow $1_spamassassin_t self:process ~{ ptrace setcurrent setexec setfscreate setrlimit execmem execstack execheap };
	allow $1_spamassassin_t self:fd use;
	allow $1_spamassassin_t self:fifo_file rw_file_perms;
	allow $1_spamassassin_t self:sock_file r_file_perms;
	allow $1_spamassassin_t self:unix_dgram_socket create_socket_perms;
	allow $1_spamassassin_t self:unix_stream_socket create_stream_socket_perms;
	allow $1_spamassassin_t self:unix_dgram_socket sendto;
	allow $1_spamassassin_t self:unix_stream_socket connectto;
	allow $1_spamassassin_t self:shm create_shm_perms;
	allow $1_spamassassin_t self:sem create_sem_perms;
	allow $1_spamassassin_t self:msgq create_msgq_perms;
	allow $1_spamassassin_t self:msg { send receive };

	allow $1_spamassassin_t $1_spamassassin_home_t:dir create_dir_perms;
	allow $1_spamassassin_t $1_spamassassin_home_t:file create_file_perms;
	allow $1_spamassassin_t $1_spamassassin_home_t:lnk_file create_lnk_perms;
	allow $1_spamassassin_t $1_spamassassin_home_t:sock_file create_file_perms;
	allow $1_spamassassin_t $1_spamassassin_home_t:fifo_file create_file_perms;
	userdom_create_user_home($1,$1_spamassassin_t,{ dir file lnk_file sock_file fifo_file },$1_spamassassin_home_t)

	allow $1_spamassassin_t $1_spamassassin_tmp_t:dir create_dir_perms;
	allow $1_spamassassin_t $1_spamassassin_tmp_t:file create_file_perms;
	files_create_tmp_files($1_spamassassin_t, $1_spamassassin_tmp_t, { file dir })

	allow $2 $1_spamassassin_home_t:dir { create_dir_perms relabelfrom relabelto };
	allow $2 $1_spamassassin_home_t:file { create_file_perms relabelfrom relabelto };
	allow $2 $1_spamassassin_home_t:lnk_file { create_lnk_perms relabelfrom relabelto };

	domain_auto_trans($2, spamassassin_exec_t, $1_spamassassin_t)
	allow $2 $1_spamassassin_t:fd use;
	allow $1_spamassassin_t $2:fd use;
	allow $1_spamassassin_t $2:fifo_file rw_file_perms;
	allow $1_spamassassin_t $2:process sigchld;

	allow spamd_t $1_spamassassin_home_t:dir create_dir_perms;
	allow spamd_t $1_spamassassin_home_t:file create_file_perms;
	allow spamd_t $1_spamassassin_home_t:lnk_file create_lnk_perms;
	allow spamd_t $1_spamassassin_home_t:sock_file create_file_perms;
	allow spamd_t $1_spamassassin_home_t:fifo_file create_file_perms;
	userdom_create_user_home($1,spamd_t,{ dir file lnk_file sock_file fifo_file },$1_spamassassin_home_t)

	kernel_read_kernel_sysctl($1_spamassassin_t)

	dev_read_urand($1_spamassassin_t)

	fs_search_auto_mountpoints($1_spamassassin_t)

	# this should probably be removed
	corecmd_list_bin($1_spamassassin_t)
	corecmd_read_bin_symlink($1_spamassassin_t)
	corecmd_read_bin_file($1_spamassassin_t)
	corecmd_read_bin_pipe($1_spamassassin_t)
	corecmd_read_bin_socket($1_spamassassin_t)
	corecmd_list_sbin($1_spamassassin_t)
	corecmd_read_sbin_symlink($1_spamassassin_t)
	corecmd_read_sbin_file($1_spamassassin_t)
	corecmd_read_sbin_pipe($1_spamassassin_t)
	corecmd_read_sbin_socket($1_spamassassin_t)

	domain_use_wide_inherit_fd($1_spamassassin_t)

	files_read_etc_files($1_spamassassin_t)
	files_read_etc_runtime_files($1_spamassassin_t)
	files_list_home($1_spamassassin_t)
	files_read_usr_files($1_spamassassin_t)
	files_dontaudit_search_var($1_spamassassin_t)

	libs_use_ld_so($1_spamassassin_t)
	libs_use_shared_libs($1_spamassassin_t)

	logging_send_syslog_msg($1_spamassassin_t)

	miscfiles_read_localization($1_spamassassin_t)

	# cjp: this could probably be removed
	seutil_read_config($1_spamassassin_t)

	sysnet_dns_name_resolve($1_spamassassin_t)

	userdom_use_unpriv_users_fd($1_spamassassin_t)
	userdom_search_user_home($1,$1_spamassassin_t)
	# cjp: this really should just be the
	# terminal specific to the role
	userdom_use_unpriv_user_pty($1_spamassassin_t)

	# this should probably be removed:
	tunable_policy(`read_default_t',`
		files_list_default($1_spamassassin_t)
		files_read_default_files($1_spamassassin_t)
		files_read_default_symlinks($1_spamassassin_t)
		files_read_default_sockets($1_spamassassin_t)
		files_read_default_pipes($1_spamassassin_t)
	')

	# set tunable if you have spamassassin do DNS lookups
	tunable_policy(`spamassasin_can_network',`
		allow $1_spamassassin_t self:tcp_socket create_stream_socket_perms;
		allow $1_spamassassin_t self:udp_socket create_socket_perms;

		corenet_tcp_sendrecv_generic_if($1_spamassassin_t)
		corenet_udp_sendrecv_generic_if($1_spamassassin_t)
		corenet_raw_sendrecv_generic_if($1_spamassassin_t)
		corenet_tcp_sendrecv_all_nodes($1_spamassassin_t)
		corenet_udp_sendrecv_all_nodes($1_spamassassin_t)
		corenet_raw_sendrecv_all_nodes($1_spamassassin_t)
		corenet_tcp_sendrecv_all_ports($1_spamassassin_t)
		corenet_udp_sendrecv_all_ports($1_spamassassin_t)
		corenet_tcp_bind_all_nodes($1_spamassassin_t)
		corenet_udp_bind_all_nodes($1_spamassassin_t)
		corenet_tcp_connect_all_ports($1_spamassassin_t)

		sysnet_read_config($1_spamassassin_t)
	')

	tunable_policy(`use_nfs_home_dirs',`
		fs_manage_nfs_dirs($1_spamassassin_t)
		fs_manage_nfs_files($1_spamassassin_t)
		fs_manage_nfs_symlinks($1_spamassassin_t)
	')

	tunable_policy(`use_samba_home_dirs',`
		fs_manage_cifs_dirs($1_spamassassin_t)
		fs_manage_cifs_files($1_spamassassin_t)
		fs_manage_cifs_symlinks($1_spamassassin_t)
	')

	optional_policy(`nis',`
		# cjp: clearly some redundancy here

		nis_use_ypbind($1_spamassassin_t)

		tunable_policy(`spamassasin_can_network && allow_ypbind',`
			nis_use_ypbind_uncond($1_spamassassin_t)
		')
	')

	optional_policy(`sendmail',`
		mta_read_config($1_spamassassin_t)
		sendmail_stub($1_spamassassin_t)
	')

	# For perl libraries.
	allow $1_spamassassin_t lib_t:file rx_file_perms;
')

########################################
## <summary>
##	Execute the standalone spamassassin
##	program in the caller directory.
## </summary>
## <param name="domain">
##	Domain allowed access.
## </param>
#
interface(`spamassassin_exec',`
	gen_require(`
		type spamassassin_exec_t;
	')

	can_exec($1,spamassassin_exec_t)

')

########################################
## <summary>
##	Execute the spamassassin client
##	program in the caller directory.
## </summary>
## <param name="domain">
##	Domain allowed access.
## </param>
#
interface(`spamassassin_exec_client',`
	gen_require(`
		type spamc_exec_t;
	')

	can_exec($1,spamc_exec_t)
')